1) If we meet at 9:30, we.....will have......(to have) plenty of time.

2) Lisa would find the milk if she.....looked......(to look) in the fridge.

3) The zookeeper would have punished her with a fine if she.....had fed......(to feed) the animals.

4) If you spoke louder, your classmates.....would......(to understand) you.

5) Dan.....would arrive......(to arrive) safe if he drove slowly.

6) You....will have......(to have) no trouble at school if you had done your homework.

7) If you.....swim......(to swim) in this lake, you'll shiver from cold.

8) The door will unlock if you....press.......(to press) the green button.

9) If Mel......had asked.....(to ask) her teacher, he'd have answered her questions.

10)I would call to the office if were you.

Đây là cấu trúc các câu trên

-Câu điều kiện loại 1:  [If + thì hiện tại đơn],  [will + động từ nguyên mẫu]

-Câu điều kiện loại 2:  [If + thì quá khứ đơn],  [would + động từ nguyên mẫu]

-Câu điều kiện loại 3:  [If + thì quá khứ hoàn thành],  [would + have + V3/V-ed]

ta có cấu trúc câu ĐK 1 và 2 

Câu Đk loại 1 :

-> If + thì hiện tại đơn,  will + V nguyên mẫu

Câu đk loại 2 :

->  if + thì quá khứ đơn, would + V nguyên mẫu

câu 1 thiếu đề 

-> sửa đề 

-> if we (meet)………………. at 9:30, we...........( have) plenty of time.

-> meet - will have

2 would find - looked

3 would have punish - fed

4 thiếu đề : 

-> sửa đề : 

if you (speak)……………… louder, your classmates...........(understand) you.

-> spoke  - would understand

5 would arrive

6 would have had - had done

7 thiếu đề 

-> sửa đề if you...........(swim) in this lake, you (shiver)………… from cold.

-> swim - will shiver

8 will unlock - press

9 had answer -  would have answered

10 would call - were

8